Trail Running calendar near Brentwood 2025-2026

Santa Claws 10km is a winter cross-country event organized by Racing Line Running, held at Renegade Brewery in the grounds of the Yattendon Estate, Berkshire. The course is a multi-terrain 10km, with a Canicross 10km option for runners with dogs. It delivers a scenic, muddy yet beautiful route throu..

The Die Hard Christmas Marathon and Half Marathon is a festive running event taking place on December 24, 2025, at Caldecotte Lake in Milton Keynes. Participants can choose between a full marathon, consisting of 7.5 scenic laps, or a half marathon with 3.5 laps. The event features a supportive atmos..

Winter X is a mid-winter trail-running challenge set in the Meon Valley near Meonstoke, Hampshire. On Sunday 28 December 2025, runners can choose from four distances: 10km, 30km, 50km, or 70km. The route uses well-trodden public trails, including the South Downs Way, with four out-and-back legs acro..

Westfield 7.5km Trail Race is a picturesque off-road loop around Westfield, based at Westfield Community Hall, TN35 4QL. The 7.5km course is mainly trail and fully marked and marshalled, offering superb views and local landmarks. The route starts by following the 1066 Country Walk for the first 3km,..

The event takes place on 28 December 2025 at Rathfinny Wine Estate, The Tasting Room, Alfriston, Polegate, BN26 5TU. The run is limited to 75 places and is open to local runners only. Part of the entry fee supports the WOLO Foundation: £8 of the £12.50 race fee goes directly to this local cancer ch..

Circuit Running Events Ltd stages the RIVER THAMES RUN on 31 December 2025 at Wraysbury Skiff and Punting Club, Riverside, Egham TW20 0AA. The event is a six-hour timed challenge on a flat, multi-terrain, out-and-back route along the River Thames. Maximum entrants are 100 and the event is licensed..

Knacker Cracker is a trail race held on Thursday 1 January 2026. The event is a single-distance race of 10K with an exact course length of 10.000 km. The route includes 473 m of ascent and 335 m of descent. A children’s fun run called the Nipper Knacker runs at the same time as the main race. The e..

Circuit Running Events Ltd stages the Rhino Run at Wraysbury Skiff and Punting Club, Riverside, Egham TW20 0AA. The event is a six-hour timed challenge on an out-and-back tarmac path that follows the river and an old railway line. The course runs on a public footpath with no navigation required. An..

East Hanningfield Trail Marathon is a 95% off-road, circular trail race around the village of Danbury, starting and finishing at East Hanningfield Village Hall. It is described as a narrative race with no marshals or arrows, requiring competitors to follow written route instructions. The varied terr..

G3 no.1 is a trail running event in the G3 Series held at Newlands Corner, Drove Road, Guildford, Surrey GU4 8SE. Runners can choose between 10km and 15km distances, with the start line and event car park located at Newlands Corner. The event offers bundled options for multi-race participation: 3 x..

North Downs Way Ultra Run is a 30-mile guided trail from St Martha’s Hill, Guildford, Surrey, along and back along the North Downs Way, including the famous Box Hill. Organised by Running Adventures, the event is designed as an approachable introduction to ultra running, with the route cared for by..

Country to Capital is a point-to-point ultra marathon of 43 miles from Wendover to the Little Venice area of London, finishing at the Stowe Centre near Paddington and Royal Oak tube stations. The race is part of a Grand Slam series of four ultra marathons and is listed as an Ultra-Trail du Mont-Bla..

Wild Running stages a night trail event at Denbies Wine Estate, Dorking, in the Surrey Hills. The course runs across muddy, rolling hills through the Denbies Estate and is marked for night navigation. Distances offered include: 10 miles 10K 5K Canicross races 1K and 2K kid's races for ages 3-11 E..

The Northampton 10K is a well-organized running event held at Northampton Racecourse Park, featuring a 2.2 km start followed by three laps around the racecourse. The course is accurately measured and takes place on pathway terrain, offering water stations and first aid support. Participants receive..

WTF - Where's The Finish? is a unique timed running event hosted by Zig Zag Running at Brandon Country Park in Suffolk, located in the heart of Thetford Forest. Participants choose between a 6-hour or 4-hour challenge, running multiple laps of a 5.3 km multi-terrain course featuring gravel footpaths..

The Grim Challenge is a muddy trail running event scheduled for Sunday 11 January 2026 at the Army Tank Training area, Fleet Road, Aldershot. The race has run since 2003 and, after a break in 2020, has attracted more than 1,000 participants in recent years. The route uses army vehicle testing groun..

Location: Hankley Common, Elstead, Surrey. Distance: 10km. Description: A guided trail run starting and finishing at Hankley Common Lower Car Park.The route traverses Hankley Common’s trails, known for wildlife and a World War II Atlantic Wall replica (the Lion’s Mouth) built by Canadian troops to t..

The Zigzag - Windmill Way Wander is a multi-distance running event held at the Suffolk Running Centre in Bury St Edmunds, UK. Participants can choose from 5k, 10k, half marathon, full marathon, or ultra distances, all following the scenic Windmill Way route. The course is entirely on road, featuring..

Arundel & SDW Winter Trails 2026 is a double gold-rated trail event along the South Downs, finishing in Arundel. Runners choose between a marathon along the South Downs Way from Heyshott to Arundel (featuring river runs, rolling fields, and a Gurkha Suspension bridge) and a 15-mile option that detou..

The event takes place on Saturday, 24 January 2026 at Bawsey Country Park, PE32 1EP. The park is on the B1145 between the Queen Elizabeth Hospital and Gayton. Options for participants include: 5k 10k 15k (3 laps) Half Marathon Heavy Half (5-7 laps) Marathon Ultra Marathon Maximum entrants are 100..